xref: /freebsd/sys/contrib/device-tree/Bindings/pwm/fsl,vf610-ftm-pwm.yaml (revision 0e8011faf58b743cc652e3b2ad0f7671227610df)

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pwm/fsl,vf610-ftm-pwm.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Freescale FlexTimer Module (FTM) PWM controller

description: |
  The same FTM PWM device can have a different endianness on different SoCs. The
  device tree provides a property to describing this so that an operating system
  device driver can handle all variants of the device. Refer to the table below
  for the endianness of the FTM PWM block as integrated into the existing SoCs:

  SoC     | FTM-PWM endianness
  --------+-------------------
  Vybrid  | LE
  LS1     | BE
  LS2     | LE

  Please see ../regmap/regmap.txt for more detail about how to specify endian
  modes in device tree.

maintainers:
  - Frank Li <Frank.Li@nxp.com>

properties:
  compatible:
    enum:
      - fsl,vf610-ftm-pwm
      - fsl,imx8qm-ftm-pwm

  reg:
    maxItems: 1

  "#pwm-cells":
    const: 3

  clocks:
    minItems: 4
    maxItems: 4

  clock-names:
    items:
      - const: ftm_sys
      - const: ftm_ext
      - const: ftm_fix
      - const: ftm_cnt_clk_en

  pinctrl-0: true
  pinctrl-1: true

  pinctrl-names:
    minItems: 1
    items:
      - const: default
      - const: sleep

  big-endian:
    $ref: /schemas/types.yaml#/definitions/flag
    description:
      Boolean property, required if the FTM PWM registers use a big-
      endian rather than little-endian layout.

required:
  - compatible
  - reg
  - clocks
  - clock-names

allOf:
  - $ref: pwm.yaml#

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/clock/vf610-clock.h>

    pwm@40038000 {
        compatible = "fsl,vf610-ftm-pwm";
        reg = <0x40038000 0x1000>;
        #pwm-cells = <3>;
        clocks = <&clks VF610_CLK_FTM0>,
                 <&clks VF610_CLK_FTM0_EXT_SEL>,
                 <&clks VF610_CLK_FTM0_FIX_SEL>,
                 <&clks VF610_CLK_FTM0_EXT_FIX_EN>;
        clock-names = "ftm_sys", "ftm_ext", "ftm_fix", "ftm_cnt_clk_en";
        pinctrl-names = "default";
        pinctrl-0 = <&pinctrl_pwm0_1>;
        big-endian;
    };